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by gregeric
Thu Oct 26, 2017 11:33 pm
Forum: Troubleshooting
Topic: Is it really necessary to use WD cable kit for PiDrive 314?
Replies: 5
Views: 231

Re: Is it really necessary to use WD cable kit for PiDrive 314?

The WD drives are native USB3, backwards compatible with USB2. There's *no* SATA conversion involved (save for hidden in the drive's electronics itself, maybe). Just use whatever USB cable you have to hand - even a micro-USB will poke into one half of that widened connector on the PiDrive314 HDD. Wi...
by gregeric
Fri Jun 02, 2017 2:09 pm
Forum: General discussion
Topic: LEDs already on?
Replies: 4
Views: 430

Re: LEDs already on?

GPIOs 0 through to 8 have weak (~50k) pullups enabled by default at boot - enough to feebly light your grounded LED. Additionally, GPIOs 2&3 have strong (~2k) pullups soldered in place for i2c use on those pins - those pins will light your LED brightly. GPIOs 9-27 have weak pull-downs, so your groun...
by gregeric
Sat May 20, 2017 4:49 pm
Forum: Off topic discussion
Topic: Hospitals no fun, not talking worse.
Replies: 74
Views: 4850

Re: Hospitals no fun, not talking worse.

Hi David. I haven't dug deep, but it appears Google AIY has both a locally synthesised voice, and the more refined online one. Both are female, so may not suit anyways!
by gregeric
Sat May 20, 2017 10:51 am
Forum: Off topic discussion
Topic: Hospitals no fun, not talking worse.
Replies: 74
Views: 4850

Re: Hospitals no fun, not talking worse.

So sorry to hear of your misfortune David and best of luck with recovery. As hippy has suggested, the Google AIY project may be worth looking at. You don't need the Voice HAT to use it - it will work with any playback & capture device. There's a "say" action which repeats whatever comes after "say"....
by gregeric
Fri May 19, 2017 6:55 am
Forum: Beginners
Topic: 3D Printing Question
Replies: 3
Views: 394

Re: 3D Printing Question

You'll need to slice the downloaded 3D object file into printable layers, .stl -> .gcode conversion. At this point you get to dictate the layer thickness, extrusion rate, temperatures, position on bed etc etc parameters to suit your printer. That middle-man can be a laptop running eg Cura for slicin...
by gregeric
Thu May 18, 2017 9:02 pm
Forum: Beginners
Topic: LabView for multiple GPIO output signals
Replies: 1
Views: 195

Re: LabView for multiple GPIO output signals

The complete GPIO bank 0 (BCM0-BCM27) is exposed on the 40 pin header, so in theory you have 28 digital outputs. Note that BCM0 & BCM1 will be pulsed early during the boot process while the VPU firmware looks for an I2C HAT eeprom on those lines (but afaicr it may be possible to disable this in conf...
by gregeric
Wed May 17, 2017 11:29 am
Forum: General discussion
Topic: I found that one resistor was missing next to the HDMI inter
Replies: 6
Views: 612

Re: I found that one resistor was missing next to the HDMI i

Nah, the CMIO3 works with the CM1. Maybe they use an internal pullup, or it just isn't needed, WJDK.
by gregeric
Wed May 17, 2017 10:20 am
Forum: General discussion
Topic: I found that one resistor was missing next to the HDMI inter
Replies: 6
Views: 612

Re: I found that one resistor was missing next to the HDMI i

I'd hazard a guess that R14 is the same pullup resistor as R15 on the CMIO boards, on the HDMI_CEC line. There it is a 27K pullup to 3V3 on the CMIO Rev 1.2, but not fitted on the CMIO Rev 3.0.
by gregeric
Tue May 16, 2017 6:58 pm
Forum: AIY Projects
Topic: Play through bluetooth speakers instead.
Replies: 11
Views: 1190

Re: Play through bluetooth speakers instead.

Those changes will not affect any of your mods, and are easily reversible by simply re-enabling the google dtoverlay= and commenting out mine.
by gregeric
Tue May 16, 2017 6:26 pm
Forum: AIY Projects
Topic: Play through bluetooth speakers instead.
Replies: 11
Views: 1190

Re: Play through bluetooth speakers instead.

You could replicate my current setup: comment out the dtoverlay=googlevoicehat-soundcard in config.txt, & add drivers only for the mics by following my guide here: https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=173640. You only need follow the steps in the first post there, no asound.rc twe...
by gregeric
Tue May 16, 2017 5:37 pm
Forum: AIY Projects
Topic: Play through bluetooth speakers instead.
Replies: 11
Views: 1190

Re: Play through bluetooth speakers instead.

I'm pretty sure it worked in that configuration when I first played with the Voice HAT & AIY (I'm now running it without any google hardware / Voice HAT drivers). If you're running headless, & you encounter any Bluetooth connectivity issues, you'll find it will revert to the Google hardware for outp...
by gregeric
Tue May 16, 2017 5:16 pm
Forum: AIY Projects
Topic: Play through bluetooth speakers instead.
Replies: 11
Views: 1190

Re: Play through bluetooth speakers instead.

All that's required is firstly to pair the speaker from the Bluetooth menu: left-click -> "Add Device", then right-click on the Speaker icon to selecting your BT speaker.
by gregeric
Mon May 15, 2017 9:13 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Add an I2S mic using device tree & simple-audio-card
Replies: 33
Views: 6863

Re: Add an I2S mic using device tree & simple-audio-card

Google's Voice HAT (ICS43432 mics + MAX98357 DAC) ignores the ICS43432 codec & employs its own machine & codec drivers.

Maybe you could use that as a template, but it would be nice to figure out how to use simple-audio-card & device tree in lieu.
by gregeric
Thu May 11, 2017 5:15 pm
Forum: Troubleshooting
Topic: GPIO pins seem to be dying one by one
Replies: 14
Views: 916

Re: GPIO pins seem to be dying one by one

davidcoton wrote:If not, reduce R1 on the relay board, or short IN1 (which will then not illuminate, of course). Don't try both mods at the same time!
Or leave unmodded & use pcmanbib's circuit on that 2xrelay board :)
by gregeric
Thu May 11, 2017 1:10 pm
Forum: Troubleshooting
Topic: GPIO pins seem to be dying one by one
Replies: 14
Views: 916

Re: GPIO pins seem to be dying one by one

If your original board is the same as this one , which it appears to be, then I suspect the reason your GPIO goes pop eventually is more likely because you're drawing too much current , not because somehow 5V is magically finding its way back to the GPIO. Looking closely at the picture, it looks lik...
by gregeric
Thu May 11, 2017 10:30 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: How to save the power consumption in raspberry pi 3
Replies: 5
Views: 487

Re: How to save the power consumption in raspberry pi 3

500mAh spent over 30 hours is roughly 160mA average current draw.

You might acheive that with a Zero or A+.

Does your task need to be always-on? If not, an alternative would be to use a MoPower or WittyPi to automatically power on/off the Pi at suitable intervals, thus extending run time.
by gregeric
Tue May 09, 2017 11:59 am
Forum: AIY Projects
Topic: Best questions to ask AIY. ..
Replies: 25
Views: 2188

Re: Best questions to ask AIY. ..

kusti8 wrote:it'll bring up a trivia game of your choice and start playing it with you right there.
When I ask to play a trivia game, I can't get past "how many people want to play?" - I say a number and there it ends.
by gregeric
Tue May 09, 2017 10:06 am
Forum: General discussion
Topic: Which 3 things do you want to see in the Raspberry Pi 4?
Replies: 79
Views: 4421

Re: Which 3 things do you want to see in the Raspberry Pi 4?

Why waste time and money pushing hardware with a small team, when the larger manufacturers can do it for you, unless it is cost effective (I don't know and not going to guess if it is.) Use an off the shelf GPU/SoC & the cloners will be very happy. Meanwhile, RPiF's revenue stream will suffer. So y...
by gregeric
Tue May 09, 2017 8:56 am
Forum: General discussion
Topic: Which 3 things do you want to see in the Raspberry Pi 4?
Replies: 79
Views: 4421

Re: Which 3 things do you want to see in the Raspberry Pi 4?

What I don't understand is the obsession that it has to have VC4 and not a more generally available processor. A large number of the RPi engineers, software & hardware, are the same team who designed & refined the VC4. Why wouldn't they want to stick to what they know, when they can perhaps tweak i...
by gregeric
Tue May 09, 2017 8:41 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: The I2S sound thread.
Replies: 769
Views: 287279

Re: The I2S sound thread.

YCN- wrote:That means that the device will give me both clocks isn't it ?
No, it means that if your circuit does not itself inject a clock into SCK, the PCM5102 will generate a SCK with a PLL from BCK.

BCK & LRCK are provided by the Pi's I2S peripheral when it is in master mode.
by gregeric
Mon May 08, 2017 7:12 pm
Forum: AIY Projects
Topic: Don't have AIY, now what?
Replies: 10
Views: 656

Re: Don't have AIY, now what?

Sorry, I meant that the USB mic drivers will automatically load. In total, you need a working mic, sound output, button on GPIO 23, & helpful to have the LED on GPIO 23. Then go play.
by gregeric
Mon May 08, 2017 6:43 pm
Forum: AIY Projects
Topic: Don't have AIY, now what?
Replies: 10
Views: 656

Re: Don't have AIY, now what?

Any links or 'How To' guides ? I had searched but turned up empty. If it's a USB mic, I guess it will just work. If you obtain an I2S mic breakout, you can add such a mic using the instructions here: https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=173640 (You could just use the provided goo...
by gregeric
Mon May 08, 2017 6:22 pm
Forum: AIY Projects
Topic: AIY Voice HAT Hardware Reverse Engineering
Replies: 10
Views: 2512

Re: AIY Voice HAT Hardware Reverse Engineering

I answered jhewitt123 on twitter, but for the benefit of anyone else: The leftmost pad of the Drivers header is the raw GPIO - leave it alone. The centre pad is for the positive side of your load, so the anode of an LED with series resistor for example. The right hand pad, nearest the board edge, is...
by gregeric
Mon May 08, 2017 5:15 pm
Forum: AIY Projects
Topic: Don't have AIY, now what?
Replies: 10
Views: 656

Re: Don't have AIY, now what?

You don't need a compatible DAC/Amp either. I'm using ZeroW, Bluetooth speaker, and my hand-soldered ICS43432 mic.

So it seems any mic, & any sound output will suffice to play with it...
by gregeric
Sun May 07, 2017 7:14 pm
Forum: General discussion
Topic: Raspberry Pi power cut torture test using a MoPower UPS
Replies: 30
Views: 2635

Re: Raspberry Pi power cut torture test using a MoPower UPS

I will indeed test older hardware when this is done. I have a feeling it will not fare as well. I would expect little difference between hardware revisions. OTOH older firmwares/kernels may not fare so well - there have been bugfixes, & switches between the eMMC & sdhost peripherals used for SD acc...

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